List.Count

返回列表中的项数。

Syntax

List.Count(
    list as list
) as number

Remarks

返回指定列表中的项数。

• list: 要检查的列表。

Examples

Example #1

查看列表 {1, 2, 3} 中的值数。

List.Count({1, 2, 3})

Result:

3

Example #2

查找颜色列表中 red 出现的次数，忽略大小写。

let
    colors = {"Red", "Blue", "GREEN", "red", "Yellow", "RED"},
    redCount = List.Count(
        List.Select(colors, each Text.Lower(_) = "red")
    )
in
    redCount

Result:

3

Example #3

查找列表中购买金额超过 100 美元的客户数量。

let
    customers = {
        [CustomerID = 101, CustomerName = "Alice", AmountPurchased = 150],
        [CustomerID = 102, CustomerName = "Bob", AmountPurchased = 75],
        [CustomerID = 103, CustomerName = "Carol", AmountPurchased = 50],
        [CustomerID = 104, CustomerName = "Dave", AmountPurchased = 90],
        [CustomerID = 105, CustomerName = "Eve", AmountPurchased = 120]
    },
    highValueCustomerCount = List.Count(
        List.Select(customers, each [AmountPurchased] > 100)
    )
in
    highValueCustomerCount

Result:

2

Category

List.Information